Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| Red Hat · RHEL 8 enterprise_linux:8::baseos | python-cryptography | 0:3.2.1-4.el8 |
| Red Hat · RHEL 8 enterprise_linux:8::baseos | python-cryptography-debugsource | 0:3.2.1-4.el8 |
| Red Hat · RHEL 8 enterprise_linux:8::baseos | python3-cryptography | 0:3.2.1-4.el8 |
| Red Hat · RHEL 8 enterprise_linux:8::baseos | python3-cryptography-debuginfo | 0:3.2.1-4.el8 |
Vulnerabilities 2
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Critical 9.1
PyCA Cryptography symmetrically encrypting large values can lead to integer overflow
In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.
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Medium 5.9
RSA decryption vulnerable to Bleichenbacher timing vulnerability
python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via timed processing of valid PKCS#1 v1.5 ciphertext.
References
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article
https://access.redhat.com/security/updates/classification/#moderate
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article
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/
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report
https://bugzilla.redhat.com/show_bug.cgi?id=1778939
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report
https://bugzilla.redhat.com/show_bug.cgi?id=1873581
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report
https://bugzilla.redhat.com/show_bug.cgi?id=1889988
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report
https://bugzilla.redhat.com/show_bug.cgi?id=1891947
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report
https://bugzilla.redhat.com/show_bug.cgi?id=1907429
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report
https://bugzilla.redhat.com/show_bug.cgi?id=1926226
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advisory
https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_1608.json
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report
https://access.redhat.com/security/cve/CVE-2020-25659
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advisory
https://www.cve.org/CVERecord?id=CVE-2020-25659
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advisory
https://nvd.nist.gov/vuln/detail/CVE-2020-25659
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article
https://cryptography.io/en/latest/changelog.html#v3-2
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report
https://access.redhat.com/security/cve/CVE-2020-36242
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advisory
https://www.cve.org/CVERecord?id=CVE-2020-36242
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advisory
https://nvd.nist.gov/vuln/detail/CVE-2020-36242
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article
https://cryptography.io/en/latest/changelog.html#v3-3-2